/// <summary>
/// Appends the given string to the end of this object.
/// </summary>
/// <param name="str"> The string to append. </param>
public void Append(ConcatenatedString str)
{
Append(str.ToString());
}
/// <summary>
/// Returns a new ConcatenatedString instance containing the concatenation of this ConcatenatedString
/// and the given string.
/// </summary>
/// <param name="str"> The string to append. </param>
/// <returns> A new ConcatenatedString instance representing the concatenated string. </returns>
public ConcatenatedString Concatenate(ConcatenatedString str)
{
return(Concatenate(str.ToString()));
}